Owner's Manual
Page 128
...O You may supply cooler air to maintain the previously set for AUTO, pressing the AIR FLOW button will display the requested temperature, fan speed and air delivery mode for the system to adjust the temperature setting if necessary. Pressing the AUTO button will display the current airflow...fan speed. The airflow choices available are used by the automatic system to display the outside air temperature. If you choose the temperature setting of 90°F (33"C), the system will remain at that maximum heating setting and will not cause the system to put anything over the sensors...
...O You may supply cooler air to maintain the previously set for AUTO, pressing the AIR FLOW button will display the requested temperature, fan speed and air delivery mode for the system to adjust the temperature setting if necessary. Pressing the AUTO button will display the current airflow...fan speed. The airflow choices available are used by the automatic system to display the outside air temperature. If you choose the temperature setting of 90°F (33"C), the system will remain at that maximum heating setting and will not cause the system to put anything over the sensors...